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Related Concept Videos

Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test01:22

Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test

In clinical practice, the direct measurement of hepatic blood flow to evaluate liver function presents significant challenges due to the intricate and specialized nature of the necessary techniques. Consequently, healthcare professionals often rely on empirical estimates derived from thorough patient examinations and liver function tests to gauge liver health. Among the tools at their disposal, the Child–Pugh and MELD scoring systems stand out for their ability to categorize and assess the...
Drug Toxicity: Overview01:00

Drug Toxicity: Overview

Drug toxicity quantifies the harm a compound causes to an organism, varying by dose and potentially impacting whole systems or specific organs like the liver. Toxic reactions may arise from venomous insect or spider bites, with effects ranging from mild symptoms to severe outcomes such as brain damage or death. Common forms of acute poisoning include ethanol intoxication and overdose of pain or fever medications, with substances like GHB and heroin being particularly lethal at doses close to...
Drug toxicity: Idiosyncratic Reactions01:16

Drug toxicity: Idiosyncratic Reactions

Idiosyncratic drug reactions represent abnormal chemical responses that vary significantly among individuals, ranging from extreme sensitivity to low doses to insensitivity to high doses. These reactions often occur due to the drug's covalent binding with serum proteins, forming a foreign hapten that triggers an immunotoxicological response. The variability in drug reactions has a strong pharmacogenetic foundation, with genetic differences crucial in how individuals metabolize drugs. For...
Effect of Hepatic Disease on Pharmacokinetics: Dose Adjustments Due to Hepatic Impairment01:08

Effect of Hepatic Disease on Pharmacokinetics: Dose Adjustments Due to Hepatic Impairment

Hepatic impairment, characterized by decreased liver function, does not uniformly mandate adjustments in drug dosage. Whether dosage modifications are necessary depends on various factors related to the drug's metabolism and elimination pathways. If a drug is primarily excreted via the kidneys and bypasses significant hepatic processing, if it undergoes minimal metabolic transformation in the liver, or if it is volatile and primarily expelled through the lungs, dose adjustments may not be...
Drug toxicity: Drug–Drug Interaction01:30

Drug toxicity: Drug–Drug Interaction

Drug–drug interactions can precipitate toxicity through multiple mechanisms. Absorption interactions alter how drugs enter the body, exemplified when ranitidine increases the absorption of basic drugs, while cholestyramine decreases the levels of propranolol. Protein binding interactions occur when drugs share the same binding sites on plasma proteins. Drugs like aspirin and warfarin, when bound in excess, can lead to increased free drug concentrations, enhancing the potential for...
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Effect of Hepatic Disease on Pharmacokinetics: Drug Dosing and Hepatic Blood Flow

Chronic liver disease significantly impacts drug metabolism due to alterations in hepatic blood flow and enzyme accessibility. This disruption affects the body's pharmacokinetics—the movement and processing of drugs within the system. Key enzymes crucial for metabolizing medications become less accessible, changing how drugs are processed and utilized. Furthermore, liver disease influences the synthesis of plasma proteins, such as albumin and globulins, which play critical roles in drug binding...

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Related Experiment Video

Updated: Jul 15, 2026

Human Liver Microphysiological System for Assessing Drug-Induced Liver Toxicity In Vitro
11:06

Human Liver Microphysiological System for Assessing Drug-Induced Liver Toxicity In Vitro

Published on: January 31, 2022

Review article: drug hepatotoxicity.

C Y Chang1, T D Schiano

  • 1The Division of Liver Diseases, Department of Internal Medicine, The Mount Sinai School of Medicine, New York, NY 10029-6574, USA. charissa.chang@mssm.edu

Alimentary Pharmacology & Therapeutics
|April 25, 2007
PubMed
Summary

Drug-induced liver injury is a significant concern. While some drugs like amoxicillin-clavulanic acid frequently cause liver damage, others like statins are generally safe, even in patients with liver disease.

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Human Liver Microphysiological System for Assessing Drug-Induced Liver Toxicity In Vitro
11:06

Human Liver Microphysiological System for Assessing Drug-Induced Liver Toxicity In Vitro

Published on: January 31, 2022

An All-Human Hepatic Culture System for Drug Development Applications
07:23

An All-Human Hepatic Culture System for Drug Development Applications

Published on: October 20, 2023

Area of Science:

  • Pharmacology
  • Hepatology
  • Toxicology

Background:

  • Drug toxicity is a primary cause of acute liver failure in the U.S.
  • Understanding drug-induced liver injury (DILI) is crucial with increasing drug approvals.

Purpose of the Study:

  • Update knowledge on hepatotoxicity of common drug classes.
  • Assess medication safety in patients with pre-existing liver disease and post-transplant.
  • Review toxicogenomic advances in understanding hepatotoxic drugs.

Main Methods:

  • Medline literature search conducted.
  • Keywords included: drug toxicity, hepatotoxicity, statins, thiazolidinediones, antibiotics, antiretroviral drugs, and toxicogenomics.

Main Results:

  • Amoxicillin-clavulanic acid is a frequent cause of DILI globally.
  • Statins show low risk of significant liver injury, even in patients with liver disease.
  • Newer thiazolidinediones are safer than troglitazone; antiretrovirals require monitoring, especially in co-infected patients.
  • Genetic factors (polymorphisms, HLA types) influence individual susceptibility to drug hepatotoxicity.

Conclusions:

  • Drug-induced hepatotoxicity remains a clinical and regulatory challenge as new drugs emerge.
  • Ongoing collaborative research is vital for advancing the understanding of drug-induced liver injury.